Abstract:

The cultivation and production of yellow corn in Iraq finds increasing interest at the local and international levels, because of its great importance for food and feed uses, as the state encouraged researchers to carry out scientific research in order to find new varieties that suit the climatic conditions of their cultivation, and achieve self-sufficiency from this crop. The current research deals with climatic effects on yellow maize productivity and its spatial difference between Najaf and Kirkuk. The aim of the research is to find out the most important climate impacts that limit productivity increase through the adoption of an analysis of monthly averages of temperature and relative humidity for the years (2016, 2017, 2018, 2019). Climatic data were monitored in the study area that represents the projects of bile sorghum production, in order to reach the results that help the researcher to know the effect of climate on the variation of yellow corn production in the study area, and the research reached several conclusions, the most important of them. 1. The cultivation of yellow corn is affected by climatic conditions, as it is more successful in the agricultural areas of the Kirkuk plant than in the areas of the Najaf station because of the high temperatures within the Najaf station. 2. It was reached by studying the correlation coefficient of the relationship of temperature and productivity that there is a positive relationship between them within the Kirkuk station, as it reached (Y = 56674X + 141773), while its relationship was negative in the Najaf station which reached (Y = 42.599X-352.66) , Which confirms the success of its cultivation in Kirkuk governorate to provide the climatic conditions for its cultivation. 3. It was found that there is a variation in the productivity of one dunum, as the highest productivity was recorded in the Kirkuk governorate of (6314.8) kg / dunum, in the lowest rate recorded in Najaf (2630.3) kg / dunum. 4. The difference in climatic conditions between the stations led to a variation in productivity, temperature and relative humidity for the regions affiliated with them, due to the variation of the standard deviation for them, as it reached in the Kirkuk station (4.853,2.8,11481.39) for productivity, humidity and temperature, respectively, which reflects the great variation in Productivity, and the lowest standard deviation was recorded in the Najaf station (5.91,9.75,697.5) for productivity, humidity, and temperature.

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